Category: no classification
Flags: Undocumented function
INT 15 - AMI PCI BIOS - GET CPU TYPE AND SPEED AX = DA92h Return: CF clear (successful) AL = CPU stepping (see also #00529 at INT 15/AH=C9h) AH = CPU model BL = CPU family (05h = Pentium, etc.) CX = external clock speed in MHz (BCD) (0040h,0050h,0060h,0066h are possible return values on my Pentium with the Intel "Neptune" chipset) EAX high word destroyed Note: 90 MHz and faster Pentium CPUs can be configured to run at varying multiples of the external clock speed, i.e. a typical 90 MHz Pentium system will run the motherboard at 60 MHz (my 90 MHz Pentium returns 0060h in CX) SeeAlso: AH=C9h